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Set Modifiers with Implicit Field Value Definitions
In the above examples, all field values have been explicitly defined or defined through searches. There is
however an additional way to define a set of field values by the use of a nested set definition.
In such cases, the element functions P() and E() must be used, representing the element set of possible values
and the excluded values of a field, respectively. Inside the brackets, it is possible to specify one set expression
and one field, e.g. P({1} Customer). These functions cannot be used in other expressions:
Examples:
sum( {$} Sales )
returns the sales for current selection, but only those customers that ever have bought the product
‘Shoe’. The element function P( ) here returns a list of possible customers; those that are implied by
the selection ‘Shoe’ in the field Product.
sum( {$} Sales )
same as above. If the field in the element function is omitted, the function will return the possible
values of the field specified in the outer assignment.
sum( {$} Sales )
returns the sales for current selection, but only those customers that ever have supplied the product
‘Shoe’. The element function P( ) here returns a list of possible suppliers; those that are implied by
the selection ‘Shoe’ in the field Product. The list of suppliers is then used as a selection in the field
Customer.
sum( {$} Sales )
returns the sales for current selection, but only those customers that never bought the product ‘Shoe’.
The element function E( ) here returns the list of excluded customers; those that are excluded by the
selection ‘Shoe’ in the field Product.
Syntax for Sets
Hence, the full syntax (not including the optional use of standard brackets to define precedence) is
set_expression ::= { set_entity { set_operator set_entity } }
set_entity ::= set_identifier [ set_modifier ]
set_identifier ::= 1 | $ | $N | $_N | bookmark_id | bookmark_name
set_operator ::= + | - | * | /
set_modifier ::= < field_selection {, field_selection } >
field_selection ::= field_name [ = | += | ¬–= | *= | /= ] element_set_expression
element_set_expression ::= element_set { set_operator element_set }
element_set ::= [ field_name ] | { element_list } | element_function
element_list ::= element { , element }
element_function ::= ( P | E ) ( [ set_expression ] [ field_name ] )
element ::= field_value | " search_mask "
68.5 Synthetic Dimension Functions
ValueList (value {, value })
Returns a set of listed values which, when used in a calculated dimension, will form a synthetic dimension.
In charts with a synthetic dimension created with the valuelist function it is possible to reference the dimension
value corresponding to a specific expression cell by restating the valuelist function with the same
parameters in the chart expression. The function may of course be used anywhere in the layout, but apart
from when used for synthetic dimensions it will only be meaningful inside an aggregation function.
Examples:
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